Isotonic Solutions: Secret of Bacterial Viability in Suspensions Kumar Jeetendra | February 3, 2020 Preparation of microbial suspensions is usually one of the simple, routine and repetitive tasks generally performed in a microbiological laboratory. Commonly used bacterial suspension fluids include bacteriological saline, phosphate buffered saline (PBS) and Ringer’s solution. An ideal suspension fluid should ensure preservation of health of bacterial cells without allowing them to multiply further. However, saline, …